High quality comes from exquisite technology. In the machining industry, there are often high-precision machining of mechanical parts, which should be completed by selecting suitable machine tools and equipment. Let’s take a look at the machining accuracy of high-speed CNC computer gongs?
CNC computer gong is actually CNC machining center, which is an automatic machine tool controlled by program. The control system can logically process the program with control code or other symbolic instructions, decode it through the computer, so as to enable the machine tool to perform the specified action, and process the raw materials into semi-finished products or finished mechanical parts through tool cutting. CNC machining is completely controlled by computer and completed by process programming according to the drawing of mechanical parts. CNC machine tool itself has high precision. Generally, the spindle speed is 8000 / r.p.m, the spindle of high-speed machine can reach 10000-15000 / r.p.m, the part plane precision can reach 0.002-0.005mm, and the hole precision can be controlled between 0.003-0.005mm. In case of complex machining of mechanical parts, different process methods are selected to complete the machining accuracy.
The above is about the machining accuracy of CNC computer gongs. Thank you for sharing!
In the machining process of mechanical equipment parts, the surface treatment processes of metal aluminum parts often include black anode, sand blasting oxidation, wire drawing oxidation, natural color anode oxidation and hard white oxidation. These treatments are to make the parts achieve the corresponding effect. Let’s take a look at the principle of natural color anodizing in the surface treatment of mechanical parts
The meaning of Natural Color Anodizing of aluminum for mechanical parts is: the color of aluminum after electrolysis after alkali corrosion. In fact, the thickness of aluminum film determines the color. Generally, the electrolysis time is 10 minutes, the voltage is 12F and the temperature is 24D. It is found that the composition of aluminum material changes, and the oxidized film should be between 10mu-15mu. This treatment is called natural color anodizing of aluminum. The function of Natural Color Anodizing not only increases the hardness of the part surface, prolongs the service life of the part, but also improves the appearance of the part.
The above is the sharing of the principle of natural color anodizing in the surface treatment of mechanical parts. Thank you for your attention!
In metal material processing, customers often choose sus303, SUS304 and other stainless steel materials to process spare parts. In order to prevent the influence of rust on spare parts, help life is used, which is a direct method. However, it is not important to prevent rusting effect when processing some equipment spare parts, but also have a certain hardness. How to choose materials! One of the most suitable materials in S136 is that it can reach hardness after heat treatment and is not easy to rust for a long time.
S136 material is also a common kind of mechanical equipment parts. As long as it reaches the specified temperature during heat treatment, other surface treatment can also prevent rust, because the material of S136 is different from that of other materials, and the material can not be rusted after heat treatment. Therefore, S136 material can prevent rust after heat treatment!
High quality comes from exquisite technology. Thank you for sharing whether S136 material can prevent rust after heat treatment!
In the process of machining mechanical parts, we often encounter the machining of Cr12 materials and spare parts. Let’s see what surface treatment Cr12 materials are suitable for
Cr12 is one of the mold materials. The hardness can reach more than 50-60 degrees after heat treatment. Cr12 is used in many mechanical equipment parts. After rough machining, heat treatment is reserved for finish machining. After finishing the machining process, chrome plating, nickel plating, blackening and other surface treatments can be done. It can be finally completed according to the processing requirements on the drawing.
The above is what kind of surface treatment Cr12 material is suitable for. Thank you for sharing! If you need to know about Cr12 material processing technology, please contact us, and we will provide you with services wholeheartedly!
In the process of machining and manufacturing industry and precision mechanical parts processing, the most contact is the mutual cooperation of mechanical equipment parts. So what is the cooperation of precision machining industry? What aspects should be paid attention to in dimensional tolerance fit in the machining process?
Overview of interchangeability of precision part fitting: the interchangeability of machining fitting usually includes the interchangeability of geometric parameters (such as size) and mechanical properties (such as hardness and strength). Only the interchangeability of geometric parameters is discussed here. The allowable variation of dimensions and geometric parameters of mechanical parts is called “tolerance”. The interchangeability of mechanical equipment spare parts in terms of geometric parameters is reflected in the tolerance standard. The tolerance standard is the basic standard in machining and manufacturing. It provides a theoretical basis for the standardization, serialization and generalization of machines, so as to shorten the time of mechanical design and promote the rapid development of new products.
Definition of “size” of mechanical parts: size is a number representing the standard value in specific units. Basic size of mechanical parts: the size given by the design. Actual size: the size obtained by measurement. Limit dimension: refers to the two limit values of allowable dimension change. Maximum solid state (MMC) and maximum solid size: the maximum solid state refers to the state when the hole or shaft has the largest amount of material within the dimensional tolerance. The size in this state is called the maximum entity size, which is a general designation of the minimum limit size of the hole and the maximum limit size of the shaft. Minimum solid state (LMC) and minimum solid size: the minimum solid state refers to the state when the hole or shaft has the least material within the dimensional tolerance. The size in this state is called the minimum entity size, which is a general designation of the maximum limit size of the hole and the minimum limit size of the shaft. Action size: the maximum ideal shaft size connected with the actual hole on the full length of the mating surface is called the action size of the hole. The size of the smallest ideal hole external to the actual shaft is called the action size of the shaft.
Definition of “tolerance and deviation” of mechanical parts. Dimension deviation: refers to the algebraic difference obtained by subtracting a certain dimension from its basic dimension; Dimensional tolerance: refers to the variation of allowable dimensions; Zero line: in the tolerance and fit diagram (tolerance zone diagram for short), a datum line for determining the deviation, i.e. zero deviation line; Tolerance zone: an area defined by two straight lines representing the upper and lower deviations in the tolerance zone diagram; Basic deviation: it is used to determine the upper deviation or lower deviation of the tolerance zone relative to the zero line. Generally, it refers to the deviation close to the zero line. When the tolerance zone is above the zero line, its basic deviation is the lower deviation; When it is below the zero line, its basic deviation is the upper deviation; Standard tolerance: any tolerance specified in the national standard to determine the size of the tolerance zone.
Definition of “fit” of mechanical parts: it refers to the relationship between combined holes and shaft tolerance zones with the same basic dimensions. Basic hole system: it is a system in which the tolerance zone of a hole with a certain basic deviation forms various fits with the tolerance zone of an axis with different basic deviations; Base axis system: it is a system in which the tolerance zone of an axis with a certain basic deviation forms various fits with the tolerance zone of holes with different basic deviations; Fit tolerance (or clearance tolerance): it is the variation of the allowable clearance, which is equal to the absolute value of the algebraic difference between the maximum clearance and the minimum clearance, and also equal to the sum of the matched hole tolerance zone and the shaft tolerance zone; Clearance fit: the tolerance zone of the hole is completely above the tolerance zone of the shaft, that is, the fit with clearance (including the fit with minimum clearance equal to zero); interference fit: the tolerance zone of the hole is completely below the tolerance zone of the shaft, that is, the fit with interference (including the fit with minimum interference equal to zero) ; transition fit: in the fit between hole and shaft, the tolerance zones of hole and shaft overlap each other. Any pair of holes and shaft match, which may have clearance or interference fit.
The machining tolerance fit of mechanical equipment parts can also be matched according to the actual machining process effect on the customer’s drawings to meet the best requirements in the process of equipment assembly. The above are the basic concepts of machining tolerance fit of precision mechanical parts. Thank you for your attention.
